71092997 has 4 divisors (see below), whose sum is σ = 75274956. Its totient is φ = 66911040.

The previous prime is 71092993. The next prime is 71093017. The reversal of 71092997 is 79929017.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 56085121 + 15007876 = 7489^2 + 3874^2 .

It is a cyclic number.

It is not a de Polignac number, because 71092997 - 2² = 71092993 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71092993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2090954 + ... + 2090987.

It is an arithmetic number, because the mean of its divisors is an integer number (18818739).

Almost surely, 2^71092997 is an apocalyptic number.

It is an amenable number.

71092997 is a deficient number, since it is larger than the sum of its proper divisors (4181959).

71092997 is a wasteful number, since it uses less digits than its factorization.

71092997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4181958.

The product of its (nonzero) digits is 71442, while the sum is 44.

The square root of 71092997 is about 8431.6663240430. Note that the first 3 decimals coincide. The cubic root of 71092997 is about 414.2624865013.

The spelling of 71092997 in words is "seventy-one million, ninety-two thousand, nine hundred ninety-seven".